Exterior and Party Walls

The elements of "Exterior and Party Walls" include shell or not? It seems to be exterior walls seperated from outdoor and party walls seperated from other spaces. But in the credit requirements, it requires to maintain NON-SHELL components. So the exterior wall should be excluded? Another question: if the tenant occupies the whole floor and the party wall is the building core wall (concrete wall enclosing elevators, AHU room etc. Then the party wall will be structural wall. But in the credit requirements, it requires to maintain NON-structural components. So the concrete party wall should be excluded in the calculation?